Transparent coating of flexible, elastic polyurethane for transparent glass or synthetic resin substrates
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United States of America Patent
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May 17, 1988
Grant Date -
N/A
app pub date -
Feb 20, 1987
filing date -
Feb 22, 1986
priority date (Note) -
Expired
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Abstract
A transparent coating for windows or other transparent substrates made of glass or synthetic resin, consisting of a flexible elastic polyurethane, serves as a shatterproofing coating for substrates made of silicate glass or as a coating improving the scratch resistance of substrates made of synthetic resin. To reduce or prevent the formation of a deposit of moisture on the surface of the coating, the polyol component of the reaction mixture for preparing a coating pursuant to the invention consists of a difunctional sulfonated polyether polyol containing approximately 1 to 10% of OH groups by weight and a trifunctional polyol containing approximately 8 to 12% of OH groups by weight and having an average molecular weight of approximately 400 to approximately 1000 g/mole.
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